Also, Seattle's new tax only affects individuals who make more than $250,000 a year. Kunath says that also is unconstitutional; his complaint points out that the state constitution says that income is property, and that property has to be taxed at the same rate.

The city attorney's office says they can't comment on pending litigation. But city officials have said that they've been expecting lawsuits and they drafted the language behind the tax in way that would let them defend it in court. The city received the suit on Monday, July 17, and has 20 days to formally respond.